Otto Bock Helix3D 7E10, Instructions For Use Manual

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42 | Ottobock Helix
INFORMATION
During adjustment, the free swing range (FSW) and swing phase resistance (SW) have an effect on one an­
other. A correction of the free swing range may therefore become necessary.
3.6.2 Gait parameter adjustment
CAUTION
Risk of falling during trial walking.
For safety reasons, let the prosthesis wearer make the first steps always
within parallel bars! Otherwise there is the risk of falling.
CAUTION
Risk of falling caused by uncontrolled knee joint flexion.
The expansion springs integrated in the Helix
3D
Hip
Joint cause the hip joint to flex after standing up or lifting the prosthesis. This can result in uncontrollable knee
joint flexion during the subsequent heel strike. Instruct the prosthesis wearer about these characteristics of the
hip joint!
CAUTION
Damage caused by inappropriate adjustment tools.
Using inappropriate adjustment tools can cause damage
to the hydraulic unit. Only the adjustment wrench 710H10=2X3 is to be used for adjustment.
INFORMATION
For use of the C­Leg: Always also observe the C­Leg knee joint Instructions for Use (647H215) and the C­Soft
Instructions for Use (647G268) before adjusting the gait parameters on the Helix
3D
hip joint.
For use of the Genium: Always also observe the Genium knee joint Instructions for Use (647G573) and the
description of use of the X­Soft contained therein before adjusting the gait parameters on the Helix
3D
hip joint.
First check the factory settings as described in section 3.6.1 To adjust please proceed as follows:
1
2 3
1
Gradually increase the free swing range (stride length) until the stride length
on the prosthesis side approximately corresponds to that of the sound side.
The set stride length should not exceed the stride length of the sound side.
2
Reduce the high factory setting of the swing phase resistance so that the
flexion resistance is clearly noticeable but still comfortable. This will make
safe heel strike possible.
Please note:
Since the two adjustment parameters have an effect on one
another, a correction of the free swing range may become necessary. Now
make C­Leg® adjustments.
3
Notice:
Increasing the stance phase resistance can cause stance phase flexion
of the knee joint. If the stance phase resistance setting is too high, uncon­
trolled knee joint flexion can result.
Increase the stance phase resistance
step by step
and give the prosthesis
wearer the opportunity to get accustomed to this resistance. Stance phase
resistance adjustment should be made over a longer period. With optimally
adjusted resistance, the prosthesis wearer will
slowly sink into the Helix
3D
Hip Joint in the stance phase and reach maximal extension of the hip
joint just before initiation of the swing phase
.